Keithley / MetraByte PCIP-DMM/A 4.5-Digit Multimeter

The Keithley / MetraByte PCIP-DMM/A is a 4.5-digit multimeter card designed for direct integration into ISA-bus compatible computer systems via full-length I/O slot insertion. It delivers benchtop multimeter performance within a plug-in architecture, using the host computer’s display and input peripherals as its user interface. The card measures DC and AC voltage, DC and AC current (true RMS), and resistance across manual or auto-ranging modes.

Data logging capabilities distinguish this instrument for automated test environments. Capture up to 999,999 readings at intervals from 0.5 seconds to 99.9 minutes, with background operation enabled. All logged data streams to user-specified ASCII files compatible with spreadsheet and presentation software. When coupled with a PCIPSCAN module, the PCIP-DMM/A expands into a multi-channel data acquisition platform.

The card’s measurement inputs employ three standard 3/4-inch spaced banana jack binding posts, fully isolated from computer and line power. True RMS circuitry ensures accurate AC measurements. A relative reference mode provides offset nulling capability. Software control flows through computer keyboard or mouse input; the pop-up display mode renders approximately one-third of the screen real estate.

## Technical Specifications

• Resolution: 4.5-digit
• Measurement Functions: DC voltage, AC voltage (true RMS), DC current, AC current (true RMS), resistance
• Ranging: Manual or automatic
• Data Logging: Automatic or manual modes; maximum 999,999 readings; logging intervals 0.5 seconds to 99.9 minutes; background operation
• Display: Host computer screen (~one-third area); pop-up mode supported
• Control: Computer keyboard or mouse
• Input Connections: Three banana jack binding posts at 3/4-inch spacing
• Isolation: Fully isolated from computer and line power
• Reference: Relative reference for offset nulling

## Key Features

• Compact ISA-bus card form factor
• Integrated data logging to ASCII format
• True RMS AC measurement
• Flexible logging intervals and background operation
• Software-driven display and control

## Compatibility & Integration

Designed for IBM PC/XT/AT and IBM PS/2 models 25/30. Pairs with PCIPSCAN for multi-channel logging applications.